Originally reported as a fault Duration in form mm:ss is not accepted this is a feature request for minutes to be accepted in the form mm:ss when other systems provide data in this form, for example through a RESTful integration
How would you distinguish hh:mm from mm:ss?
It would have to take the declaration / definition into account. In this case the declaration is ‘min’ , perhaps the declaration clause needs to allow ‘mm:ss’ . . .
Just convert the value and move on, this will likely never get added because a user can change the units on the fly and this would break that functionality.
"{{ (("00" ~ value) | as_timedelta).total_seconds() }}"
Then use seconds as the configured unit_of_measurement.
In the UI, it will show up as a normal duration sensor and you can modify it to your hearts content (if you added a unique_id).
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